#include <bits/stdc++.h>
using namespace std;

#define rep(i,n) for(int i=0;i<(int)(n);i++)
#define repi(i,a,b) for(int i=int(a);i<(int)(b);i++)
#define all(x) (x).begin(),(x).end()
#define foreach(u,v) for(auto (u) : (v))
#define pb push_back
#define mp make_pair
#define mt make_tuple

typedef long long ll;
typedef pair<int, int> pii;
typedef vector<int> vi;
typedef vector<vi> vvi;
typedef pair<ll, ll> pll;
typedef vector<ll> vl;

const int inf = 1e9;
const ll linf = 1e18;
const ll mod = 1e9 + 7;
const double eps = 1e-9;

int main()
{
  string s;
  cin >> s;

  int m3 = 0, m5 = 0;
  rep(i, s.size()){
    m3 = (m3*4+s[i]-'0')%3;
    m5 = (m5*4+s[i]-'0')%5;
  }

  if(m5 == 0 and m3 == 0){
    cout << "FizzBuzz" << endl;
  }else if(m5 == 0){
    cout << "Buzz" << endl;
  }else if(m3 == 0){
    cout << "Fizz" << endl;
  }else{
    cout << s << endl;
  }

  return 0;
}